For your first question I do not believe in OSAS<quoted text>
22 But now that you have been set free from sin and have become slaves of God, the benefit you reap leads to holiness, and the result is eternal life.
*****We have been set free from the bondage of sin.
*****We have become slaves of God.
*****The benefit you REAP leads to HOLINESS.
*****The result is ETERNAL life.
Now, the question is:
Can you lose all of this???
Wlll we remain "preserved in Christ Jesus???"
For the second. For those who dilegently seek Christ Ephesians 4:30
And grieve not the holy Spirit of God, by whom you are sealed unto the day
1 Thessalonians 5 implies we will be be preserved blameless to the coming of our Lord Jesus Christ